On the optimality of dolinar’s receiver

Itamar Katz, Yuval Kochman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Dolinar’s receiver is an architecture for distinguishing between two possible coherent states, using a photon detector and a local signal which may depend on past detector measurements. The optimal local signal satisfies very favorable properties: it is independent of the time horizon, and the resulting error probability is independent of the measurements. It was also shown that the same signal is optimal in the sense of maximizing the mutual information between the identity of the state and the measurements. In this work we show that the same signal is optimal for the optimization of the expected value of a wide class of objective functions. Our proof is based entirely on convex optimization and functional analysis, without resorting to any “quantum” arguments.

Original languageAmerican English
Title of host publication2020 IEEE Information Theory Workshop, ITW 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781728159621
StatePublished - 2020
Event2020 IEEE Information Theory Workshop, ITW 2020 - Virtual, Riva del Garda, Italy
Duration: 11 Apr 202115 Apr 2021

Publication series

Name2020 IEEE Information Theory Workshop, ITW 2020


Conference2020 IEEE Information Theory Workshop, ITW 2020
CityVirtual, Riva del Garda

Bibliographical note

Publisher Copyright:
©2021 IEEE


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